Faltering confidence in the U.K.. has hit the British pound, and this strategist sees a buying opportunity.

The British pound has been taking a bit of a beating on disappointing U.K confidence data , but George Davis, chief FX technical analyst at RBC Capital Markets, thinks the Japanese yen is the one to avoid.

"One of the interesting dynamics that we've seen in the market over the last few weeks is a number of bearish breakouts for the yen," he told CNBC's Scott Wapner - and not just against the dollar. "That's the genesis for the trade idea."

Davis thinks it's time to buy the British pound against the yen, entering at 127.50 with a stop at 124.50 and a target of 137.00 even.

"We view this as a major potential macro theme to keep an eye on over the next six months or so," he adds.

Davis is considerably less bullish on the euro because of the ongoing problems in the euro zone periphery. "The risk is that because of those issues, we could see a retest and a break below 1.30" against the dollar, he says.